/**
 * ==================================================
 *   _____ _ _ _             _
 *  |     |_| | |___ ___ ___|_|_ _ _____
 *  | | | | | | | -_|   |   | | | |     |
 *  |_|_|_|_|_|_|___|_|_|_|_|_|___|_|_|_|
 *
 * ==================================================
 *
 * Copyright (c) 2025 Project Millennium
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

#pragma once
#include "internal_logger.h"
#include <chrono>
#include <curl/curl.h>
#include <string>
#include <thread>

static size_t WriteByteCallback(char* ptr, size_t size, size_t nmemb, std::string* data)
{
    size_t total;
    
    if (__builtin_mul_overflow(size, nmemb, &total)) {
        return 0;
    }
    
    data->append(ptr, total);
    return total;
}

class HttpError : public std::exception
{
  public:
    HttpError(const std::string& message) : message(message)
    {
    }

    const std::string& GetMessage() const
    {
        return message;
    }

  private:
    std::string message;
};

namespace Http
{
static std::string Get(const char* url, bool retry = true)
{
    CURL* curl;
    CURLcode res;
    std::string response;

    curl = curl_easy_init();
    if (curl)
    {
        curl_easy_setopt(curl, CURLOPT_URL, url);
        curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, WriteByteCallback);
        curl_easy_setopt(curl, CURLOPT_WRITEDATA, &response);
        curl_easy_setopt(curl, CURLOPT_USERAGENT, fmt::format("Millennium/{}", MILLENNIUM_VERSION).c_str());
        curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L); // Follow redirects

        while (true)
        {
            res = curl_easy_perform(curl);

            if (!retry || res == CURLE_OK)
            {
                break;
            }

#if defined(_WIN32)
            std::this_thread::sleep_for(std::chrono::milliseconds(1000));
#elif defined(__linux__) || defined(__APPLE__)

            if (g_threadTerminateFlag->flag.load())
            {
                throw HttpError("Thread termination flag is set, aborting HTTP request.");
            }

            /** Calling the server to quickly seems to accident DoS it on unix. */
            std::this_thread::sleep_for(std::chrono::milliseconds(1000));
#endif
        }
        curl_easy_cleanup(curl);
    }
    return response;
}
} // namespace Http
